mabe02 / lanterna

Java library for creating text-based GUIs
GNU Lesser General Public License v3.0
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java run ```java.lang.NoClassDefFoundError: com/googlecode/lanterna/screen/Screen``` #536

Closed ajh123 closed 3 years ago

ajh123 commented 3 years ago

when i run java -jar myjar.jar i get

Error: Unable to initialize main class path.to.my.Main
Caused by: java.lang.NoClassDefFoundError: com/googlecode/lanterna/screen/Screen

My MANIFEST.MF

Main-Class: path.to.my.Main

And here is my main

package path.to.my;
import java.io.IOException;

import com.googlecode.lanterna.TerminalPosition;
import com.googlecode.lanterna.TerminalSize;
import com.googlecode.lanterna.graphics.TextGraphics;
import com.googlecode.lanterna.screen.Screen;
import com.googlecode.lanterna.screen.TerminalScreen;
import com.googlecode.lanterna.terminal.DefaultTerminalFactory;
import com.googlecode.lanterna.terminal.Terminal;

public class Main {

    public static void main(String[] args) throws IOException {
        System.out.println("Hello, world?");

        Terminal terminal = new DefaultTerminalFactory().createTerminal();
        Screen screen = new TerminalScreen(terminal);

        TextGraphics tGraphics = screen.newTextGraphics();

        screen.startScreen();
        screen.clear();

        tGraphics.drawRectangle(
                new TerminalPosition(3,3), new TerminalSize(10,10), '*');
        screen.refresh();

        screen.readInput();
        screen.stopScreen();
    }
}

And my pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>hello</groupId>
    <artifactId>hello</artifactId>
    <version>1.0-SNAPSHOT</version>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <configuration>
                    <archive>
                        <manifestFile>src/main/resources/META-INF/MANIFEST.MF</manifestFile>
                    </archive>
                </configuration>
            </plugin>
        </plugins>
    </build>
    <dependencies>
        <dependency>
            <groupId>com.googlecode.lanterna</groupId>
            <artifactId>lanterna</artifactId>
            <version>3.1.1</version>
        </dependency>
    </dependencies>

    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
    </properties>

</project>
mabe02 commented 3 years ago

I think your jar isn't included lanterna, you'll need to use a special maven plugin to create a super-jar that includes all dependencies as well.